const assert = require('assert');

assert.ok(true);
// OK

assert.ok(1);
// OK

//assert.ok(false);
// throws "AssertionError: false == true"

//assert.ok(0);
// throws "AssertionError: 0 == true"

//assert.ok(false, 'it\'s false');
// throws "AssertionError: it's false"